banks



(No Model.) 11 Sheets-Sheet 1.

WI. BANKS ELECTRICAL SIGNALING SYSTEM AND APPARATUS. No. 604,712. Patented May 31,1898,

znrrolmzm.

(No Model.) 11 Sheets-Sheet 2.

.W. F. BANKS. ELECTRICAL SIGNALING SYSTEM AND APPARATUS. .No. 604,712. Patented May 31, 189 8.

4 A W A W ATTORNEYS.

(No Model.) 11 SheetsSheet 3.

W. P. BANKS. v ELECTRICAL SIGNALING SYSTEM AND APPARATUS.

Patented May 31,1898 mia'. 3.

u 0 m H N I H s H m m 4 Lb e e h S "P t e e h S 1 1 S K N A B P M d O M 0 m ELECTRICAL SIGNALING SYSTEM AND APPARATUS. No. 604,712.

Patented May 31,1898.

I I I IIIIA AL 7 INVE/V TOR M 555 WITNESSES m 11 Sheets-$heet 5.

(No Model.)

W. F. BANKS. ELECTRICAL SIGNALING SYSTEM AND APPARATUS. N0. 60 4,712.

Patented May 31 W! TNESSES I %a' 4 rrolmirs.

11 SheetsSheet 6.

W. F. BANKS. ELECTRICAL SIGNALING SYSTEM AND APPARATUS.

(No Model.)

Patented May 31, 18 98 IIVVE/V TUB 4% f WK @2/ A rramvsrs.

(No Model.) 11-Sheecs-Sheet 7.

W. P. BANKS. ELEGTRIGAL SIGNALING SYSTEM AND APPARATUS.

Patented May 81,1898.

WITNESSES By M 4 4 TTOHNEVS.

-(No Model.) 11 Sheets-Sheet 8.

W. F. BANKS.. ELECTRICAL SIGNALING SYSTEM AND APPARATUS.

No. 604,712. ted May 31,1898.

(No Model.) 11 Sheets-Sheet 9..

W. P. BANKS. ELEGTRIGAL. SIGNALING SYSTEM AND APPARATUS. No. 604,712. Patented May 31,1898.

my? 100 A WWW (No Model.) 11 Sheets-Sheet -10.

W; F. BANKS.

ELECTRICAL SIGNALING SYSTEM AND APPARATUSL No. 604,712. Patented May 31, 1898 WITNESSES INVEN T08 T 'TORNEYS.

(No Model.) 11 sneets sne t 11.

w. F. BANKS. ELECTRICAL SIGNALING SYSTEM ALID APPARATUS. No. 60 4,712.

Patented May 31,1898.

W/TNESSES: I/VVE/VTOI? BY I 3 w W fijmrromvn.

UNITED STATES PATENT OFFICE.

\VAL'LER F. BANKS, OF MILFORD, CONNECTICUT, ASSIGNOR'TO THE NA- TIONAL ELECTRICAL MANUFACTURING COMPANY, OF SAME PLACE.

ELECTRICAL SIGNALING SYSTEM AND APPARATUS.

To all whom it may concern:

Be it known that I, WALTER FREDERICK BANKS, a resident of Milford, New Haven county, State of Connecticut, have invented certain new and useful Improvements in Electrical Signaling Systems and Apparatus, of which the following is a specification.

My invention relates to electrical signaling systems and apparatus, and has for its object to produce a signaling system and apparatus whose operation shall be positive and certain.

My invention is especially capable of embodiment in so-callet municipal signaling systems, although the invention is not limited thereto, and the system and apparatus may be utilized for various signaling purposes such, for instance, as fire-alarm, railway, cable, and hotel signaling and the like.

My invention consists in the construction hereinafter described and particularly pointed out and claimed.

My invention will be understood by referring to the accompanying drawings, to which reference is hereby made, which illustrate a signaling system and apparatus embodying my invention, the same being shown as a police or municipal signaling system and apparatus. V

In the drawings, Figure 1 is a face view of the front plate of the signaling box or appa ratus with the front door removed, exhibiting the various parts which appear on the front of the box. Fig. 2 is a view of the interior of the box, the direction of the view being from the rear. This is a general view showing the preferredconstruction and location of the various parts. Fig. 3 is a sectional side elevation of the interior arrange ments of the box, the view being taken from .the right of Fig. 1 and the left of Fig. 2 on the line 33 of Fig. 2. Fig. 4 is a detail diagrammatic view exhibiting the signaling-box and. the signaling-circuits therein. Fig. 5 is a diagrammatic view of the circuits and apparatus at the central station. Figs. 4 and 5, taken together, illustrate an embodiment of my system in its simplest form. Fig. 6 is a side view of the signaling-movement which, to distinguish it from the auxiliary signalingmovemcnt, also contained in the box, will nal-wheel.

hereinafter be termed the main signalingmovement.- Fig.7 is a front face View, on an enlarged scale, of the upperportion of the signal-box, the dial being removed to clearly show the setting arrangement for the pointer and the main signaling movement. Fig. 8 is a rear view of the main signalingmovement. Fig. 9 is a sectional view of the main signaling-movement, looking from the front of the box, the section being taken on line 9 9 of Fig. 6. Fig. 10, Sheet 8, is a vertical transverse section through the signaling-box and main signaling-movement, the section being taken on the center line of the boxthat is to say, the line 10 10 in Figs. 1, 7, 8, and 9. Fig. 11, Sheet 7, is'a detail face view of the latch for locking thereleasing device for the main signaling-movement in its rear or releasing position, and Fig. 12 is a side or edge view thereof. Fig. 13, Sheet 9, is a face view of theauxiliarysignaling-movement. Fig. 14.

is a face view of the key-trap mechanism thereof, which lies immediately beneath the front plate shown in face view in Fig. 13. Fig. 15 is a side view of the said auxiliary signaling-movement. 16 16 of Fig. 15, showing the motor for the sig- Fig. 17 is a rear view of the auxiliary signaling-movement. Fi 18 illustrates aspecial key for use with the auxiliary signaling-movement and so constructed as to be trapped by the said auxiliary signaling-movecut-in switch and the signaling or strap key and the lock therefor, all of which will be hereinafter fully described. Fig. 22 is a section on line 22 2201? Fig. 21. Fig. 23 is a faceview of a correcting or cut-out key for short-circuitin g the signal-box, and Fig. 24 is a section Fig. 16 is a section on line the inner box, showing the telephone call and IOO ' 65 pose of telephoning or listening...

the direction of view being upward, as per the arrow in Fig. 2

Before proceeding to describe the'parts that to are shown-in the drawings I will proceed to identify them in a general way in order that their. location and'arrangement maybe comprehended at once. i

Referringparticularly to Figs. 1, '2, and 3 [5 of the drawings, Ais the front plate of a signaling-box B. This front plate A is ordinarily coveredby a swinging door, which is not shown, and is itself hinged'to the box B. by means of a hook-hinge O. The plateA swings upon the lower front edge D-of the box B and is provided ator near its top with a lock E for locking it in place when it is in a-vertical position. I l v v Mountedupon the sides of the box B are'a v plurality ofsets of pins F a'nd'G. Thepins Gr catch in the'slot'or bill of the hook 0 when the inner front plateA is swung forward and downward,so'asto-support the front plate when it has reachedlthe extremity ofits 3o swing and the pinsF cooperate with the point of the; bill of the hook O, as shownin dotted ment is for the purpose of sending the box{ call,and the emergency calls over the line w-during ordinary conditions.. Mounted also.

upon the rear face of the front plate A is an auxiliarysignalingrmovement I. The'ope'ration of. this movement is eifectedfrom the outside of the box through the hinged door andjfront plate bymeansofakey,fas 'will"be hereinafter, described, and in the *p'resfent in brie. emergency call and the box-number; "Iii-the "construction illustrated itspurpose' is tozen stance Serves .the purpose of sendingih 5b able a ,citizenato send in an alarm with a special/key provided for that purpose and shown in Fig. 18, which key willbe'trappedby the, auxiliary movement. The auxiliary movement may. also be operated by a. regular 5 5 or police key, (shownin Fig 19,) which key will notbe trapped .bythe-auxiliary move-.

ment. Mounted upon the front plate A arev one or more telephones ,J K, which are seated in apojei'tures in the front plate as shown, and areproyid'e'd with flexibleconductors or cords, whichaiiefwtounduponthereelsL M, mounted it passes-over the main-line wire Xto thecentral station ,passing first to a main-line strapkey Y, thence through a relay Z, through a I upon thereafr face ofthe front plate A, so that the telephones maybe pulled out for the purkey g j so called, the purpose pf short-cirtral and using the signaling-line with its and 10,) andQ is the .tap-bellstruck thereby.

I v hereinafter explained. lin esin Fig.3, so that-the front plate Ais rigidly locked in place at its lower end by the pins Eand hook and at its upper end by the 5 lock Mountednpon therear face of the front plateof thesi'gnaling-box is'the main signaling-movement H. 'This signaling-move through thefron't plate.

{lnal-bell'in the box 'will be made.

cuiting the box for testing or correcting a call. I

any signal, in order that when this operationhas taken place the box-may be reset and .the

"proper signal sent in, or any desired part of- Y the signal may be kept off-the line by shortcircuiting' the movement while'this part o f-8o thesignal is being made. r

0 (see- Figs. 2, 3,. 21, and-22) isa telephone calling and switching jack which serves to signal over the telephone-line to the central station and to thereupon cut the box-telephone instrument into the line, ,all of which will be clearly explained, it being merely premised for the present that thereis a telephone-line paralleling the signal-line to cen- 9O battery as a common. return. I

' J]? is a'signaling-mag'net adapted for receiving test or return signals, "(see Figs. 2, 3, 4,

-' R is a signaling-key or strap-key. (See:

-Figs. 2', 2,1,and 22.) .This key is normally locked from operationby lock S, as will be Thevarious circuits in the box run to and from a, universal insulator-bar T in the top of the box, and mountedupon. the rear plate of thebox is acombined switch andlightningarrest-er U., It will be observed that all the operating parts of the 'box are carried upon the swinging front plate. g

Referring particularly to Figs. 1, 7,and 20, it will be observed that there is in the upper left-hand corner of '-the front plate akey V, manipulated by a .button o'ywh-ich extends I This key is the cutno out key and, When the door of the box is closed, is pressed inward until, its contact-'- point 1; contacts with the strip 21 so that a short circuit around the magnetsof the sig- Having, described the; general arrangement; of the box, I will now proceed todes'cribe the circuit therethrough and the central-station "circuits, having reference to Figs; 4 and 5,

which represent diagrammatic views thereof.

.Starting fromthe main'battery W inFig. 4

the current passes by wire 1 to and through the signaling-key R, thence by wire 2. to and through the contact apparatus of the auxiliary signal mechanism'or movement I, thence 5 5' by. wire t to, and through the return-signalreceiving magnet P, and'by wire ,5 to and throng}x the contact apparatus of the main signali g-movement H to-the w'irei6, whence wire 7, back'to'th'e battery. The return-signalingmagnet P is short-cir thewires 1 to 6 of the signal-box is a short air-- cuitcomprising a wire 12, leading from wire 1 to one terminal '11 of the correcting-key N, and a wire '13, leading from wire 6 to the op- 'posite terminal n of the correcting-key N, so that by turning the correcting-key by means of its haft or button 01 the box may be shortcircuited.v This, however, can only be d ne when the door is swung open to expose the front plate of the box, as the correcting-key is inaccessible from theoutside of the box when the door is closed.

The arrangement of thecentral station is clearlyshown in Fig. 5, wherein the armature A manipulates the circuits. One of these circuits, which is fed from-the station-battery B, extends from the said battery by the wire 14 to the armature A, to its back-stop A by wire 16 through a register 0, thence by wire 17 through a magnet 18. This magnet operates as a controller for the visual-signal-indicator magnet 21.- The circuit thence passes by wire19 to the armature 20, controlling a short circuit around the visual indicator magnet 21. This magnet 21" for actuating the indicator-pointer is electrically connected to the armature 20 by wire 22 and to the magnet 23 for, actuating the electromechanical gong by wire 24. The short circuit for these two magnets is comprised by the wire 25, the swinging arm 26-, and the armature 20. This armature is provided at the rear with a governing device or governor, here shownias a,

pawl-and-ratchet retarding mechanism, so that the armature 20 will be brought up to its magnet 18 slowly, being meantimepkept in contact with the swinging arm 26, so that a short signal or impulse sent through the controller 18 will last long enough time to draw the armature forward far enough to carry it off the swinging arm 26, so that the short cir-' cuit around the magnets 2l-and 23 will not be broken'by short impulses coming over the line, but will bebroken by the long impulsescoming over the line, therebyresponding to the long or emergency sig nals, thereby causing the magnets 21 and 23 to respond toa long or emergency signal and maintaining them free from actuating-current during the short impulses which register thebox numb'ei-dt being understood that the box signaling mechanism sends two characters or calls, one being composed of. a series of short signals-or impulses, which designate the box from which the signal is sent, and the other of one or more long or emergency signals or impulses to indicate a 'want. The want, therefore, will be indicated upon the electromechanical gong. by

the operation of its magnet 23 and upon the indicator by the operation of its magnet 21, the box-number-not being indicated by these devices. It will be observed that when the armature 20 is uncovered the said armature and its magnet will operate as a primary-signal-receiving device, and the magnet 21 and its armature will operate as a-secondary-signal receiving device. The current passes from the swinging arm 26 by wire 27 to and through a tap-bell 2S, thence by wire 29 to thebattery B. The; tap-bell 28 is shown as manipulating a contact device D, which controls a time-stamp E, a type of which contact device is shown in Figs. 25 and 26. This contact device D is manipulated from the tap-bell through the medium of a suitable circuit comprising wires3O 31 and an actuating-contact 32. One of the terminals 33 of a repeater-line is connected to the armature 35,--causi-ng the said relay to manipulate the circuit ofsthe gong-magnet G and register HI.

This gong, register, and relay maybe located in a wagon-house to give an emergency wagon call, and in order to do-this it is necessary that only the special or want signals should be indicated at such wagon- -house.- In order to accomplish this, a short circuit is formed around the terminals 33 37 and manipulated by the magnet 21, which actuates the indicator or pointer. The ma- Operating the armature A nipulati ng apparatus for this indicator or pointer and its ,controllingmechanism form. the subject-matter of an application for patent by me filed on even date herewith, Serial No. 607,548, and issued as Letters Patent No. 587,693, dated August 10, 1897. This short circuit consists of the wire 38, which runs to the stop 30, with which stop a swinging arm 40 cooperates, which swinging arm is actuated by a swinging arm 41 of the indicatormagnet. 21. tends by wire L2 to the terminal 33, so that the armature A will manipulate the repeater.- circuit only at such times as the short circuit 38 to 42 is open, .which, as before explained, will-be during the flow or pendency of a long or emergency signal. The armature 43 of 2 the contact device I). manipulates the time- From the arm 40 the circuit exon the line=-When-the armaturc-zdwill retracted,j and on its return stroke will'close the circuit of the time-stamp E, thereby re-' J cording the time of receipt of the message.

' From the-foregoing it will'be obvious that as the box is pulled to sendin calls comprising one or more long emergency or special signals followed by a series of short locality signals or calls comprising a series of short locality signals only the locality signals will the short circuit 38 to 42 is intact. When the special or emergency signal has been received, the localitysignal begins. The special signals beinglon g impulses, as explained, each long-impulse or signal will not only work the register and the tap-bell 28, but will also swing the armature 2O far enough to break the short circuit around magnets 21 and 23, thereby allowin g current to pass through said magnets and operate the indicator and the gong-magnet 23 and open the short circuit of the repeater-circuit. During each impulse of a call the armature 43 will be drawn up to its magnet and will cause the time-stamp to operate only upon the completion of the signal.

I will now proceed to describe the'construction and operation of the main signaling mechanism or movement,- referring particularly to Figs. 2, 3, 6, 7, 8, 9, 10, 11', and 12. I11 these figures, h is the main or operating .shaft of the movement and carries the usual spring or winding barrel h and gear-wheel v *h which gear-wheel 7L3. meshes with a pinion 'h in the usual manner upon a signal-wheel shaft h ,which is provided with a wheel h, meshing with a pinion h on an escapernentshaft h which carries a scape-wheel 72. with which a swinging weighted pawl or click it engages. The partsj ust described constitute the motor and escapementmechanism of the signal-wheel shaft 71. This signal-wheel 1 (best seeni'njFig. 10) and upon the bushing.

shaft 7&5 carries an insulating-bushing ha locality-signal wheel 7t ,.in whose periphery a serles of notches are out, leaving between them the metal in the form of signal-spurs 71. and also carries an emergency-signal wheel 71/ shown in the present instance as having a single long signaling-tooth 71 O0 operating with. the locality-signal wheel 72 is a rigid contact-lever h, which swings {upon the'pivot h" and is held against a contactpost It by a spring h .Garried upon the same pivot h and cooperating with the emergency-signal' wheel h is a similar rigid lever or contact-piece h (see Fig. 6,) which is held againstthe contact-post h by'a spring it.

(See Fig. 8.) The pivot h is insulated from the plate or frame 71. of themovement Hand is connected bya bar h with another post it, which is also insulated from the frame 12. of

the signal-movement. The contact h is carried upon a bar 7?, which is fixed upon a post h which is insulated from the framework-and to which the wire 66 is connected, as

is clearly shown in Figs. 4c and 8. Theother contact h" is connected to a bar h, which is a switch-lever 71 which is carried upon the pivot or post it and is provided with a too it, which is adapted to drop into a slot or re cess 71. in a cam-wheel 7e which is carried This is effected by means of a contact-spring it, which is carried upon upon the main 'or operating shaft h of the movement, which cam when rotated by the the switchlever 71. and raise the contactspring 71 away from the post A and bring it against the post 71 it being understood that the post h and contact h cooperate with the contact-lever 72. which sends in the locality signals. The gear-wheel h on the signalwheel shaft 72. carriesa plurality of h one of which pins,'h contacts with a step-shaped stop h on a releasing-plunger .71., which projects through the front plateA of the box and is provided with a push-button 71. This plunger h may be pressed inward by hand and is impelled outward to restore it to its normal position bya spring it, (clearly shown in Fig. 6,) so that when the motor has been wound or set for movement said stop has been movedoff the pin 71" by pushing the plunger h inward. The other operates with a stop-arm h on the shaft h. When thebox is at rest and unset this, pin 72, rests against the arm h, the said arm turning'with the-shaft h during the running of the movement to send in the signal and being brought into position to cooperate with shaft h in setting the movement will swing pins 71 the stop 72. will hold it from moving until the pin 71, on the wheel k is a stop-pin which cothe stop-pin 77. at the proper moment to stop 'themovement. Carried also uponthe shaft h is a ratchet It, which cooperates with a pawl h? on the spring-barrel, so that the main shaft and ratchet may be stepped around in the ordinary manner to wind the box. Oarried also upon the shaft 7t is 'a lifting-arm h, which engages a pin h upon a catchplateor latch 11 (shown in detail in Figs. 11 and 12, which latch is carried upon the rear plate It 7 of the movement and has a tendency to descend impartedto it by a spring h position-that is to say, the position shown When the partsare in'itheir normal or idle in Fig. 9the latch will be held up by the arm h and will be pulled downward byits spring 71. as soon as the arm h begins to move when the box is being set and will then test on the edge or shoulder h of the stop-lever h, so

that it will drop in front of the stepped stoplever 72 when the said stop-lever is carried inward by its plunger it away from the'stoppin h on the trip-wheel hi and release. the

' said wheel, whereby the plunger will be held in its pushed-in position by the latch until the signal has been sent in, when as the movement returns to its normal position the arm h 'will lift upon the latch h, pulling it away from engagement with the stop-lever h, and thereby releasing the plunger, which will thereupon be sprung into its outward position by its spring h These operations will be understood by referringto Fig. 9,wherein it will be noticed that a toe 71 of the latch project-s over a shoulder h of theston-lever 17/ The setting of the box or main signal-movement is accomplished as follows: Swinging upon the shaft h of the movement is a setting-lever h, which is operated byahook or tively long ratchet-tooth h.

A stop-pin h is provided for moving the pawl 71. away from the ratchet-wheel when the setting-lever is in the normal position. (Shown in Fig. 7.) "The long tooth h is of greater extent than the stroke of the pawl h so that when the pawl contacts with the short teeth its swing will carry the ratchet and its shaft around a distance ofone short tooth, thereby winding the spring-barrel k The ratchet may thus be stepped around one tooth at a time until the pawl it reaches the curved face of the tooth [2. when the stroke of the pawl not being long enough to carry it off the upper surface of the tooth h strain- ,ing or overwinding the movement after the limit of the box calls or signals is reached is h when the plunger has'been pushed in. so

that when the plunger has 'releasedthemova ment-and is in its inward position the settings lever cannot be moved until the movement has sent in its signal and has released the plungeig'which is thereupon'sorung outward signaling movement.

by its springand carries the catch-lever h out of the path of the stop h The stop h being arc-shaped subserves another valuable function in-coinbina-tioniwith the catch-lever h to wit, preventing the signal mechanism from being released while the swinging setting-arm h is being swung or is in any position other than the normalfor by referring to Fig. 7 it will be seen that as long as the arm h is in its highest or normal position the plunger may be pushed in, the catch-lever h passing freely under the stop h but when the swinging setting-lever h is swung downward the arc-shaped stop h will come into the path of movement of the catch-lever h and will thereby prevent the movement from being released to send in .a signal. By this combination of mechanism'l have therefore a means for preventing 'overwinding of .the box and a reciprocal means for preventing; the signaling mechanism from being released while the setting mechanism is in operation and for holding the setting mechanism inactive while'a: signal is being transmitted.

Carried also upon the. shaft 7t is a short-circuiting lever h, which is provided with an .arm h and with a spring 72, which connects the said arm h with the switch-lever hi This spring therefore serves to hold the toe 72, of the swinging bar it against the cam-wheel 72. The short circuiting lever or bar 71. is provided with a contact-spring h, which contacts with the post it and serves to shortcircuit the signal-wheels, as will clearly appear by reference to Fig. 4, wherein .a the'o- 'retical diagram of the boxeeircuits is shown. In the normal position of the movement-to wit, that shown inthe drawings-thecontactspring h will rest against the con tact-post 71, thereby forming a short circuit to the main The short circuiting lever is pressed downward against the post it by means of a pin h on the cam-wheel 71 When-the spindle or main. shaft h is rotated to setthe' movement, the rotation will be in the direction of the arrowin Fig. 8,-and when the movement is released the rotation will be in the reverse direction, so that in setting a signal the "pressure'of the pin it upon the short-circuiting lever will be relieved, and its spring h? will separate the contact-spring h from the contact-post h, thereby breaking the short circuit around the signal contact-levers.

The operations of the main'signaling mechanism in the regular order are asfollows: If

the operator desires to send'in the first of the special or emergency signals, which is the second call of the box which is here marked Fast wagon, he seizes, the hook 72. and pulls down upon it, therebyengaging the pawl h. with a tooth 71 of the ratchet it, and rotatesthe' ratchet and the'main shaft-h a space of one tooth, which'rotating shaft hcarries with it the cam-wheel 71., thereby liftingthe pin It away from-the-sho'rt-circuiting lever h, per

initting the said lever to be retracted from its 'eontact post h to break the short circuit.

'. little way-to permit the catch-plate h to dejaround the signal-levers and also brings the.

edge or shoulder'h of the cam-wheel -h against the toe h thereby slightly rockingthe switch-lever h to rub the contact-sprin g h back and forth on the post 71, so as to rub these parts together to keep them clean, but without lifting the contact-spring h off the said contact.. By this movementthe operator has set the .wheels for one rotation and has moved the pointer around one space to. the

' point marked On duty. \Vhen the parts" have been thus moved by the operator, the

stop-arm h will have been moved away from the stopin 71, on the wheel h and the lift- 5,0 has been explained, been cleared away from in'g-arm 1 will have swung downward a s'cend.- These arms h and h, as has been explained, rotate with the shaft h of the setting or motor mechanism andare brought back to their normal ,position by the return movement or rotation of the motor mechanism during the transmission of the'signal. Wi'ththe parts in the positions justid'e-v scribed the spring h? forces the too h of the latch it? against the top of the shoulder 71. on thestop-lever h". The operator again pulls down the hook' h and thereby rotates the ratchet h and shaft h the space of an other tooth, riding the toe 77, of the switchlever 71 up the shoulder h of the cam-wheel It, bringingthe said toe upon the high edge or surface of the said cam-wheel h and the operator proceeds to send in the signal.

This heaccomplishes by pushing in the button 71. thereby interposing the catch-lever h in the path of the stop 71 so that the hook cannot be pulled-down while the box is sending in its signal and likewise carrying the stoplever hi backward off the pin h and from beneath the too 72. of the latch'h, which thereupon drops down in frontofthe shoulder h of the stop-lever and holds the same firmly fromabeing sprung outward by its spring. By this operation the stop-lever'h has, as

, the path of the stop-pin h so that the tripwheel h and shaft it will revolve, also there-,

by revolving the signal-Wheels. During the first rotation of the signal-wheels the emergency call alone will be sent in, it being remembered that the contact-spring. 72 is in contact with the post 71 of the signal-wheel mechanism. W'hen this first revolution of the wheels has been accomplished, the rotating cam-wheel will bring its cutaway por tion 71 beneath the toe h of the switch levenh, softhat as the toe drops into this-cutawayportion theleverh will carry the springcontact 71 away from the post h and bring it against the post it, which forms part of the locality-signal-wheei circuit, so that am,

These calls will be have finishedrotating theparts reachtheir normal position, the. arm 7v lifting the plate 7L to release the plunger h ,which thereupon springs forward, the stop-arm h just at the proper moment coming into the path of the stop-pin 71. and the stop-pin 7L coming against its stop-lever h.

Should it be necessary for persons other than-an authorized operator to employthe box, it is desirable that some means should be provided for operating the box without the necessity of opening the door. For this purpose I have provided the auxiliary signalingmoveinent I, which is accessible through the front plate of the box, being reached through the keyhole I therein by means of keys.

(Shown in Figs. 18 and 19.) The door of the box is also provided with a similar keyhole located in front of the keyhole I. This auxiliary movement,which I have clearly shown in Figsf13 to 17, Sheet 9, comprises front and back plates'i t" and an intermediate plate 1?.

Between the back plate 13 and the intermediate plate 1' is the usual signal-box clockwork escapement and stop mechanism for driving the signal-wheel shaft '5. This mechanism is of the ordinary description and is clearly shown in'detail in Fig. 1G. The shaft 2' carries upon its rear end an auxiliary sigrial-wheel i which is provided with teeth for sending in the signal, one of which is a long teetht' for-sending in an emergency signal. These teeth cooperate with a rigid swinging signal-1everi which cooperates with a contact-post 11 to send a signal, the said post and lever forming the terminals to which wires .2 4 are connected. (See diagram Fig.

et.) Connected to the post 2, around which the lever 11? swings, is a platea winch carries a contact-spring t, which embraces an ,insulatingpost 1' and during the normal position of the movement rests against the post i thereby forming ashort circuit around the Thefree end 'of the contact-spring 2' rests upon a pm 1 lever '5 and the contactpost 2' which when the parts are in the normal po- .sition or positionof inaction presses the spring i against the contact-post i but as soon as the wheel begins to rotate passes from under the spring, therebypermitting. the spring to break the short circuit around the signal-lever contacts. The anxiliary signal-wheel is set by the key to rotate once, so that when it has completed its rotation the pin 2' again causes the spring to short-circuit the contacts.

Located between the intermediate plate 2' and the front plate 21 is a mechanism for setting the auxiliary signal-box and for trappinga special or so-calle'd .citizens key. This IIO apparatus is clearly shown in Figs. 13, 14, and

15. Referring particularly to these figures, it will be noted that a cam-plate t is hung upon the shaft 1' which shaft is rigidly se cured to the; spring-barrel i' or other driving mechanism for the signal-wheel, so that by turning the shaft in the direction of movement of the hands of a watch the signaling.

direction of the hands of a watch it willcarry with it the shaft 7: and when it turns in a reverse direction the pawl 2' will slide over the teethyof the ratchet. The cam-plate 1' is provided with a spur or cam 11 and with ratchet-teeth 6 Mounted upon the face of the cam-plate 2' is a key-barrel 1' which is adapted for the reception of a key such as shown in Figs. 18. and 19. The key-barrel is surrounded by a barrel-shaped escutcheon 1' which is provided upon its interior face with a key-arrestin g projection or stop 1'3 (Shown in dotted lines in Fig. 13.) The escutcheon is stationary, while the key-barrel will revolve with the key and cam-plate. -A lever or stop-pawl 71 is pivoted at 2' upon the intermediate plate'of the movement and is provided with a notch to receive the tail 2' of a catch-lever 1' which is pivoted at upon the intermediate plate 2' of the movement. These two levers 2' and 1' are joined together by a springvl and are both adapted to-codperate with the edge of the cam-lever 1'. The movement is also provided with-postsz' i against which the cam 2' strikes in its movement, so as to limit the oscillation of the cam-plate 2'. The movement is likewise provided with a releasing-pin 1' against which the tail of the pawl 77 abuts in order to swing thesaid pawl and disengage it from the ratchet i". ,be noted that the police orregular key 7: (see It will Fig. 19) is provided with a notch 7r, through which the stop F on the inner face of the escutcheon-barrel will pass, so that the" regula r key maybe turned until the cam i comes against the stop or post 6 The special key K Fig. 18, is not provided with the notch is, so that it will engage with the stop or pin 1' thus preventing the key 'from being turned more than a certain distance. I

I will now proceed to describe the operation of setting the box and trapping the special key, it being remembered that this setting is accomplished by turning the cam-plate to the left in the direction of the hands of a watch, thereby tu,rnin g also the setting-arbor or main shaft This special key, which is shown in Fig. 18, is inserted into the keyhole and turned, carrying with it the cam-plated. As the cam-plate 1' turns the pawl i will drop behind the teeth 2' one after the other,

' until the pawl 2' rests behind the last tooth. of the series, when the tail of the pawl 2' will come against the pin i and will be thereby rocked, releasing the winding-arbor and allowing the movement to send in the signal.

\ When'the key has reached this position, its

further 'turningisprevented by the projection or stop-pin'i and 'as'thekey cannot be turned backward by reason-of: the fact that the pawl 2' rests behind one "of the'teeth 2 it follows that the key is elfectively trapped and can be turned neither way until released by other means. Theregular key, however. is not subject to this trapping, being, as before explained, provided with anotch it, which passes freely over the pin or projection 11 3.

'When this key is inserted into the keyhole and turned, it will carry the cam-plate i around inthe same manner as the special key did, and, as before, as soon as the pawl 2' has been released from its ratchet by the pin 11 the signal will be sent in. A f urther turning of the key, however, will bring the cam '6 against the free end of the pawl 1' and will rock the same far enough to allow the tail 71 of the lever 2' to be entered by the spring 2' into the notch or recess 1' in. the said pawl 1' thereby maintaining the said pawls 1' and 1' spread far enough apart to allow the cam i to return past the free end of the pawl 2' thus providing a free passage forthe'teeth 2', which will not be long enough to reach the free end of the pawl 2' when the said pawl is caught and held swung outward by the tail of the lever 2' This return movement of the key will bring the Cam 2' against the upper end of the lever 5, thereby rocking the said lever on its pivot 2' and releasing its tail i 'from the notch 1' in the pawl 2', so that the lever 2' will be sprung back 'by'the spring 2' which unites the levers or pawls i and 11 This turning of the pawl i by the regular key also subserves another valuable function, for mounted upon or moving with'the pawl 2' is a switch-lever 4' which cooperates with a spring 10, forming part of a short circuit around the bell or return-signaling'magnet P, (see Figs. 2, 4, and

so that as the regular'key swings the 145i lever 2 it also swings the switch-lever 1 off the contact-spring 10, thereby breaking the short circuit around the signaling-magnet P at that point, so that the operator holding the regular key can get an answer back or other call onthe bell Q. This lever t likewise subserves the very valuable function of enabling the holder of'the regular key to release the special key from its trap, for mounted upon the lever 2' is abutton 2' which button projects through aslot 03 in the front plate A, so that in order to release the special key the holder of the regular key unlocks and swings open the door of the box, the said door being provided with angular-lyplaced slots for this purpose, and seizing the button 2' moves it to the right in the slotz',

thereby swinging the lever 2' far enoughto' allow the pawl-tail 1? to fall into the notch it, so that the reverse motion of the special key'will be unobstructed by reason of the fact that the stop-pawl or lever i is now out of the path of the teeth 11 on the cam-plated.

IOO

' The return swing of such cam-plate resets the parts to theposition shown in Fig. 14 and per- 'mits the withdrawal of the special key.

I have stated that the'contactdevice D is adapted to control the operation of the tilnestamp magnet by sending an impulse there- Jthrough only upon the return stroke of the magnets d. This armature d is carried upon a swinging yoke or arm (1, which swings upon thepivotor arbor (1 The armature 01 also carries a contact 01 and a pivoted pawl d A retracting-spring (1 serves to retract the ar-v mature when the magnet is de'nergized, and

a retracting-spring d serves to draw the pawl d downward. Turning loosely upon the arbor d is a ratchet d with which the parad cooperates, which ratchet is joined rigidlyto; a gear d, which by a train of intermediate gears impartsimotion to a' scape-wheel (1 with which a click diengages; Pivoted near the magnet d' is a contact-lever d, which forms one terminal of the circuit of the timestamp magnet, the other terminal thereof be ing constituted by the contact at, carried by the. armature d. This pivoted lever d is provided with a toe dZ-whi'ch is faced with a block of insulating materiald The toe hangs down in to the path of movementof the contact (1 so that upon its forward stroke the.

contact 01 will strike the insulating-block and upon its return stroke will strike the metallic too 03 thereby sending an impulse over. the time-stamp-magnet circuit only upon such re turn stroke.-- This will occur by reason ofthe' fact that when current first passes througlt the magnet d the armature will be drawn up to the polepiece of such magnet with a quick motion, but will recede from such magnet slowly, because the retractile spring (i in retracting the armature is obliged to impart movement .to the train of gearing which is rigidly connected to the ratchet d ,so that between impulses the armature will not be retracted far enough to bring the contact d against the teed, the resistance of the retarding device vor train of gears being propor tionately great. Consequently the armature will not be fully retracted by the retractile springd until the impulses of a necessary call have entirely ceased, in which case the retractile spring will carrythe armature back to its .initial position, and in making such back stroke the armature will contact with ,the toe d and sendan-impulse over the timestamp-magnet circuit,

Asp-I have before explained, the telephoneline to the central station is or may be a singleli'n'e employingthe signaling-line for-the return circnitr' v For the purpose of calling the central and cutting. in the telephone I have provided the telephone-switch 0,whichis clearly shown in Figs. :2, '3, 21, and 22. In these figures, ofis a button which projects from the face of the front plate A and is provided with a plunger 0' and plug 0 of insulating material. plug 0 bears against a spring 0 which surrounds the plunger 0' and abuts against the insulating-piece Of. This ,spring servesto assist the inward movement ofthe plunger. Carri-ed upon the insulating-piece o isa conductingcolla'r 0 which is adapted to bridge across the contact-springs o 0 or o 0 The contact-springs o' o are of greater length than the contact-sp'ringso 0 The contact-sprin gs 0 .0 am thert'erminals' of the circuit includ-- ing the signal-box telephone,whence it will be obvious-that by pulling out the plug 0 the collar.0 will first connect with the springs 0 This 0 forming a'direct circuit, and will send a call over the line to central, and further outward movement of the plug 0 will carry the collar 0 out ofengagement with the springs 0 0 and bring the collar 0 into engagement with the terminals of the telephone-circuit. This reciprocal action is'neces'sitated by the fact that it is desirable to have the ,high re- 'sistanceof the telephoneoutof the callingcircuit; Projecting from the face or frontv plateA is another button 1*,which is provided witha plunger r, terminating in an insulating-piece/r which is adapted. to :reach contact; with a spring rflwhich bears upon a con These parts r and r are carried tact r upon the insulating-plug O and with the cooperating push-button r constitute a special calling-key R. Mounted upon the plunger .4" is a washer r behind which the bolt set a lock S projects, so that in; order to operate the special calling or strap key it is necessary to withdraw the bolts from behind the washer 1', which withdrawal is accomplished by a key entering a keyhole 7: in the face or front plate A. This lock is soar-ranged as to permil; the withdrawal of the key only when the 'bolt is in its forward position.

In Figs. 1, 2, 23, and 24 I have illustrated a special formof correcting or short-circuiting key N. "This key is shown as consisting of a turn-button n having a spindle n which passes through a plug of insulating material n upon which the contacts in, n: are

mounted.- The spindle n carries a cross-bar 71 provided with a restoringfspring-n and ICO- rio adapted to reach contact with the contacts n,

'n to bridgeacrossthe same, vibrating between the stops n w. as explained, are socketed in'an aperture in the front plate of the door and may be pulled in and out, being connected with flexible cords or conductors Z,which are'w'ound'upon the spring-reels L M, which pull upon; the cords or conductors and hold the said tele The-telephones J K,

phones'in place in the front plate when they are not in use. The terminals of these cords are connected as follows: On'eis connected to the reel itself and the other to the plate or disk Z of the reel, upon which a spring Z? bears, which spring is connected to the wire Z and insulated from the reel. The wire Z is connected to the reel, 'so that as the telephone is pulled in and out, revolving the wheel, the circuit will'be completed through the telephone-reel and the plate 6, which, revolving under the spring Zf, maintains its circuit intact.

It will be observed that the mechanism which I'have described in detail as. an embodiment of my invention is a compact, reliable, and certainly-operating apparatus. It will likewise .be observed that the various pushbuttons-J01 instance, the buttons 0 and h closing of the door of the box should the said buttons be left in their pulled-out positions.

What I claim, and desire to secure by Letters Patent, is

1. In a signaling system, the combination of the following instrumentalities in operative relation, to wit: signal transrh'ittin g mechanism comprising a plurality of signaling devices transmitting a variety of calls,

one of said signaling devices transmitting calls comprising short signals, and the other of said signaling devices transmitting calls comprising long signals, a controlling device at the central station arranged to be partially 3 5 actuated byshort signals and fully actuated by long signals, a signal-receiver arranged to respond to a call comprising a plurality of long signals and under the control of the controlling device and operable therefrom when 40 the said controlling device has been fully actuated, whereby calls containing short signals indicate themselveson the controlling device only and calls containing long signals will actuate the controlling device to cause the same to permit .the secondary signal-receiver to respond to each long signal.

2. In a signaling system, the combination of the following instrumentalities in operative relation, to wit: signaling mechanism transmitting a plurality of calls, one of said calls comprising short signals, and. other of said calls comprising long signals, a controller at a central station, a signal-receiver operated from the said controller at predetermined times, and a governing device for the controller comprising-in its structure means for preventing the controller from allowing thesignal-receiver to operate during the reception of short signals, and means for. manipulating the receiver upon the reception of each long signal of a predeterininedclass of calls.

3. In a signaling system, the combination of the following instrumentalities in operative relation, to wit: signaling mechanism transmitting a variety of calls, one of said calls comprising short signals, and other of are in such position as to be pushedin by thesaid calls comprising long signals, a contiwller in thecircuit responsive to all signals, a signal-re'ce'iver responsive to calls comprising a plurality of long signals, a short circuit around the same under the control of the controller, and a governing device for the said short circuit, whereby the control-ler will open the short circuit of the signal-receiver at the *7 5 reception of each long signal of a call containing said long signals of a predetermined character, so that the said signals may manifest themselves in' the receiver to cause the said receiver to respond to the said call.

4:. In a signaling system, the combination of the following instrumentalities in opera-- tive combination, to wit: signaling mechan-J ism ,transmitting a plurality of calls, said 'calls comprising long and short signals, a sig- 8 5' nal-receiving deviceand a controller at the central station in circuit with each other, each arranged to respond to a call comprising a pluralityof signals, a governing mechanism for the controller ope-rating in conjunc- 0 tion with the signal-receiving device, the said governing mechanism being operated by the controller only during the reception of calls containing long signals to permit the signalreceiving device to operate and to respond to 5 each of the said long signals.

5. In a signaling system, the combination of the'following instrumentalities in operative relation, to wit:- signaling mechanism provided with means for transmitting calls roe containing long signalsand calls containing short signals, a signal-receiving device anda controller therefor operated by the signals, and a short circuit for the said signal-receiving device, a governing device for the said 105 short circuit controlled by the controller and coeperating therewith to break the short cir- 1 cuit of the short-circuited signal-receiving device upon the reception of each long signal so that the normally-short-circuited signalno receiving device will be rendered operative to respond to each call containing long signals at the time of the reception of each of the said long signals of the call, the said con troller and short-circuited signal-recei ing 1 15 mechanismoperating in unison.

6. In a signaling system, the combination of the following'instrumentalities in operative relation, to wit: signaling mechanism provided with means for transmitting a plu- 12o rality' of calls containing long and short signals, a signal-receiving device and a controller therefor, the signal-receiving device com prising in its structure a vibratory part, a

will vibrate in unison with thevibrating part 

